What to look for: It's easy to tell the difference if you get a good look at the redwing's flanks (they're red, not its wings). But if you're looking at a small thrush head-on, see if it has a distinctly pale 'eyebrow'. If it does, that's a redwing, a winter visitor to the UK from Scandinavia.

If you stand outside on a clear night at the moment, you'll probably hear the high-pitched 'seeep' calls of redwings migrating through the darkness. Magic!

What to look for: Bramblings might look very different in the books, but mixed in with a group of chaffinches, they're harder to spot than you think. Watch out for mostly orange wing stripes (not white) and a paler tummy than a chaffinch. They also migrate here from Scandinavia in search of food and a warmer winter.

What to look for: These are tiny finches, not much bigger than a blue tit. They often feed on tree seeds, dangling upside down to get them.

At this time of year, birds are leaving their breeding grounds (in the UK and northern Europe) and it's a good time to see them at feeders in your garden. Like goldfinches, they seem to prefer nyjer seed.

The amount of red feathering varies enormously - some have a tiny bit of red on the forehead, others are glorious raspberry-red all down their front, and others have no red at all! You could confuse a redpoll with a linnet, but they tend not to feed in trees and never use feeders.

What to look for: Siskins are just as small as redpolls and equally acrobatic. They'll eat nyjer seed from a feeder, but also peanuts or sunflower hearts. Keep an eye out for their yellow, black and green colour scheme (duller and streakier in females).

Siskins breed in coniferous woodland in many parts of the UK, but they tend to move in autumn and can be seen anywhere. UK birds are also joined by migrants from across the North Sea, so bid them a hearty Hej! or Hei! (that's Swedish and Norwegian for Hi!).